Finding the Fourth Proportional to 1,768.38, 2,650.54 and 842.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,768.38 : 2,650.54 = 842.62 : x
2. Step 2: Convert to fraction form
   1,768.38/2,650.54 = 842.62/x
3. Step 3: Cross multiply
   1,768.38x = 2,650.54 × 842.62
4. Step 4: Simplify right side
   1,768.38x = 2,233,398.01
5. Step 5: Solve for x
   x = 2,233,398.01/1,768.38
6. Step 6: Final answer
   x = 1,262.96